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11. Recognised signals

pppd returns 0 for okay and 1 for error. This was not good enough for dwun. As a solution, dwun can use signals from the the dialup scripts to recognise the connection status. Dwun writes its pid to /var/run/dwun.pid5. The following signals are recognised:

SIGHUP
shutdown server.
SIGINT
fatal commandon error, alert users and stop dialing.
SIGUSR1
connection is up and working.
SIGUSR2
bad connection, need to disconnect and redial.




2000-06-15